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Investigating the optical properties of nanogap optical antennas
Author(s): Ludivine Emeric; Claire Deeb; Alan Durnez; Nathalie Bardou; Riad Haïdar; Fabrice Pardo; Jean-Luc Pelouard
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Paper Abstract

We investigate the optical properties of nanogap MIM nanoantennas with a 2.1 nm thick gap. These plasmonic nanoantennas consist of a gold film, an insulating layer deposited by Atomic Layer Deposition, and a periodically structured gold layer. MIM nanoantennas are characterized by a tunable spectral response and a high field confinement within the nanogap. Nanometric gaps enable high coupling between the plasmons of the top and bottom metal surfaces. We demonstrated an excellent agreement between optical measurements and classical electromagnetic simulations. In particular, we observed a fluctuation in the gap thickness of 0.2 nm.

Paper Details

Date Published: 4 May 2018
PDF: 6 pages
Proc. SPIE 10672, Nanophotonics VII, 1067232 (4 May 2018); doi: 10.1117/12.2306849
Show Author Affiliations
Ludivine Emeric, C2N, CNRS, Univ. Paris-Saclay, CNRS (France)
ONERA (France)
Claire Deeb, C2N, CNRS, Univ. Paris-Saclay, CNRS (France)
Alan Durnez, C2N, CNRS, Univ. Paris-Saclay, Univ. Paris-Saclay (France)
Nathalie Bardou, C2N, CNRS, Univ. Paris-Saclay, CNRS (France)
Riad Haïdar, ONERA (France)
Fabrice Pardo, C2N, CNRS, Univ. Paris-Saclay, CNRS (France)
Jean-Luc Pelouard, C2N, CNRS, Univ. Paris-Saclay, CNRS (France)

Published in SPIE Proceedings Vol. 10672:
Nanophotonics VII
David L. Andrews; Angus J. Bain; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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